HYGROSCOPIC GROWTH OF ASSORTED INDOOR AEROSOLS

The hygroscopic growth of particles produced from four different kinds of oils during deep frying, from sausages during grilling, and from b urning wood in a stove was studied using a Tandem Differential Mobilit y Analyzer. The size distributions and the soluble fractions of the pa rticles were also measured. The median diameters of the particles from the oils were in the range of 168-200 nm and those from the sausages and the wood in the range of 55-80 nm. The median diameter and the geo metric standard deviation of the particles from wood depended on wood burning with or without a flame. The soluble fractions of the particle s from the oils were between 8% and 22%, and those from wood between 7 0% and 92%. The soluble fraction for particles from the sausages was 4 6%. The particles of the oil and sausage smokes did not grow and those of the wood smoke showed a significant growth.